Qhov sib txawv tseem ceeb ntawm monovalent thiab divalent yog cov ntsiab lus monovalent tshem tawm lossis nce ib lub tshuab hluav taws xob kom ruaj khov, qhov sib txawv cov ntsiab lus tuaj yeem tshem tawm lossis nce ob lub electrons kom ruaj khov.
Cov ntsiab lus monovalent thiab divalent tuaj yeem piav qhia qhov muaj txiaj ntsig ntawm cov tshuaj lom neeg. Ob nqe lus no piav qhia txog tus naj npawb ntawm cov electrons ib lub atom tuaj yeem nce lossis poob kom ua tiav qhov kev teeb tsa hluav taws xob ruaj khov.
Vajtswv yog dabtsi?
Valency tuaj yeem piav qhia raws li qhov siab tshaj plaws ntawm cov hluav taws xob ib qho atom tuaj yeem poob, nce lossis faib kom ruaj khov. Thaum xav txog cov hlau thiab cov hlau tsis muaj hlau, txoj cai octet piav qhia txog qhov ruaj khov tshaj plaws ntawm atom. Raws li txoj cai octet, yog tias lub plhaub sab nraud ntawm lub atom yog tag nrho nrog yim electrons, qhov kev teeb tsa no ruaj khov. Qhov no txhais tau hais tias yog cov s thiab p sub-orbitals tau puv tag, muaj ns2np6, qhov kev teeb tsa hluav taws xob no ruaj khov. Feem ntau, noble gas atoms muaj hom electron configuration. Qhov no qhia tau hais tias lwm yam tshuaj lom neeg yuav tsum tau poob, nce lossis faib cov electrons kom ua raws li txoj cai octet. Qhov siab tshaj plaws ntawm cov electrons koom nrog hauv cov txheej txheem stabilization no hu ua qhov valency ntawm lub atom.
Piv txwv li, tus naj npawb ntawm cov hluav taws xob nyob rau sab nraud ntawm lub voj voog ntawm leej faj yog 6. Txhawm rau kom ruaj khov, tus naj npawb ntawm cov hluav taws xob nyob rau sab nraud yuav tsum yog 8 (raws li txoj cai octet). Sulfur yuav tsum tau nce lossis faib ob lub electrons ntxiv los ntawm sab nraud. Yog li ntawd, qhov valency ntawm sulfur yog 2.
Txawm li cas los xij, cov khoom hloov pauv tuaj yeem muaj qhov sib txawv. Qhov no yog vim cov hlau hloov pauv tuaj yeem ruaj khov los ntawm kev tshem tawm cov lej sib txawv ntawm cov electrons.
Monovalent yog dab tsi?
Lo lus monovalent txhais tau hais tias muaj qhov muaj txiaj ntsig ntawm ib qho. Lwm lub sij hawm rau lub npe no yog univalent, lub ntsiab lus, "valency=ib". Monovalent atoms tuaj yeem tsim ib daim ntawv cog lus tshuaj vim tias cov atoms no tuaj yeem poob lossis nce ib qho hluav taws xob nkaus xwb thiaj li ua kom ruaj khov. Qee cov atoms zoo li sib koom ib qho hluav taws xob, tsim ib daim ntawv cog lus ib leeg, xws li. feem ntau nonmetals. Tab sis qee cov atoms zoo li tshem tawm tag nrho lossis tau txais ib qho hluav taws xob, tsim ib daim ntawv cog lus ionic, xws li. hlau. Cov tshuaj nyob rau hauv pawg 1 ntawm lub sij hawm (cov alkali hlau) feem ntau yog monovalent vim lawv tsuas tuaj yeem poob ib qho hluav taws xob uas nyob rau sab nraud ntawm lub orbital.
Divalent yog dab tsi?
Lub sij hawm divalent txhais tau hais tias muaj ob qho tib si. Divalent atoms tuaj yeem tsim ob daim ntawv cog lus tshuaj vim tias cov atoms no tuaj yeem poob lossis nce ob lub electrons thiaj li tau txais cov khoom siv hluav taws xob ruaj khov. Qee qhov sib txawv atoms zoo li tsim ob daim ntawv cog lus ib leeg los ntawm kev sib koom ob lub electrons nrog ob lub atom sib txawv. Qee cov atoms zoo li tsim ob daim ntawv cog lus nrog lwm lub atom los ntawm kev sib koom ob lub electrons. Txawm li cas los xij, pawg 2 hlau nyob rau hauv lub rooj sib tham feem ntau tsim cov ionic bonds nrog divalent anions los ntawm kev tshem tawm ob lub electrons uas nyob rau sab nraud ntawm lub atomic orbital.
Qhov txawv ntawm Monovalent thiab Divalent yog dab tsi?
Cov ntsiab lus monovalent thiab divalent yog adjectives uas piav txog qhov muaj nuj nqis ntawm ib qho atom. Qhov sib txawv tseem ceeb ntawm monovalent thiab divalent yog tias cov ntsiab lus monovalent tuaj yeem tshem tawm lossis nce ib lub tshuab hluav taws xob kom ruaj khov, thaum cov ntsiab lus sib txawv tuaj yeem tshem tawm lossis nce ob lub electrons kom ruaj khov. Ntxiv mus, cov ntsiab lus tshuaj nyob rau hauv pawg 1 ntawm lub sij hawm lub sij hawm (cov alkali hlau) feem ntau yog monovalent thaum lub ntsiab nyob rau hauv pab pawg neeg 2 ntawm lub periodic rooj yog divalent.
Hauv qab no yog cov lus qhia luv luv ntawm qhov sib txawv ntawm monovalent thiab divalent.
Summary – Monovalent vs Divalent
Cov ntsiab lus monovalent thiab divalent yog adjectives uas piav txog qhov muaj nuj nqis ntawm ib qho atom. Qhov sib txawv tseem ceeb ntawm monovalent thiab divalent yog tias cov ntsiab lus monovalent tuaj yeem tshem tawm lossis nce ib lub tshuab hluav taws xob kom ruaj khov, thaum cov ntsiab lus sib txawv tuaj yeem tshem tawm lossis nce ob lub electrons kom ruaj khov.
